中文
相关论文

相关论文: Gaussian conditional independence relations have n…

200 篇论文

We show that there is a general, informative and reliable procedure for discovering causal relations when, for all the investigator knows, both latent variables and selection bias may be at work. Given information about conditional…

人工智能 · 计算机科学 2013-02-21 Peter L. Spirtes , Christopher Meek , Thomas S. Richardson

We consider testing whether a set of Gaussian variables, selected from the data, is independent of the remaining variables. We assume that this set is selected via a very simple approach that is commonly used across scientific disciplines:…

统计方法学 · 统计学 2022-11-04 Arkajyoti Saha , Daniela Witten , Jacob Bien

Conditional independence in a multivariate normal (or Gaussian) distribution is characterized by the vanishing of subdeterminants of the distribution's covariance matrix. Gaussian conditional independence models thus correspond to algebraic…

统计理论 · 数学 2009-10-29 Mathias Drton , Han Xiao

It is well known that while the independence of random variables implies zero correlation, the opposite is not true. Namely, uncorrelated random variables are not necessarily independent. In this note we show that the implication could be…

统计理论 · 数学 2024-04-22 Piotr Jaworski , Damian Jelito , Marcin Pitera

It is well known that conditional independence can be used to factorize a joint probability into a multiplication of conditional probabilities. This paper proposes a constructive definition of inter-causal independence, which can be used to…

人工智能 · 计算机科学 2013-02-28 Nevin Lianwen Zhang , David L Poole

An important task in data analysis is the discovery of causal relationships between observed variables. For continuous-valued data, linear acyclic causal models are commonly used to model the data-generating process, and the inference of…

We extend the theory of d-separation to cases in which data instances are not independent and identically distributed. We show that applying the rules of d-separation directly to the structure of probabilistic models of relational data…

人工智能 · 计算机科学 2014-01-07 Marc Maier , Katerina Marazopoulou , David Jensen

This work investigates the intersection property of conditional independence. It states that for random variables $A,B,C$ and $X$ we have that $X$ independent of $A$ given $B,C$ and $X$ independent of $B$ given $A,C$ implies $X$ independent…

概率论 · 数学 2016-08-18 Jonas Peters

This paper studies the connection between probabilistic conditional independence in uncertain reasoning and data dependency in relational databases. As a demonstration of the usefulness of this preliminary investigation, an alternate proof…

人工智能 · 计算机科学 2013-02-28 Michael S. K. M. Wong , Z. W. Wang

We formulate and analyze a graphical model selection method for inferring the conditional independence graph of a high-dimensional nonstationary Gaussian random process (time series) from a finite-length observation. The observed process…

机器学习 · 统计学 2016-09-14 Nguyen Tran Quang , Alexander Jung

For general non-Gaussian distributions, the covariance and precision matrices do not encode the independence structure of the variables, as they do for the multivariate Gaussian. This paper builds on previous work to show that for a class…

机器学习 · 计算机科学 2025-08-18 Ujas Shah , Manuel Lladser , Rebecca Morrison

The implication problem for conditional independence (CI) asks whether the fact that a probability distribution obeys a given finite set of CI relations implies that a further CI statement also holds in this distribution. This problem has a…

统计理论 · 数学 2024-04-25 Mathias Drton , Leonard Henckel , Benjamin Hollering , Pratik Misra

In this paper we provide a theoretical analysis of counterfactual invariance. We present a variety of existing definitions, study how they relate to each other and what their graphical implications are. We then turn to the current major…

机器学习 · 计算机科学 2023-07-18 Jake Fawkes , Robin J. Evans

This paper explores certain kinds of empirical process with respect to the components of multivariate Gaussian. We put forward some finite sample bounds which hold for multivariate Gaussian under general dependence. We give necessary and…

概率论 · 数学 2020-07-03 Jikai Hou

We examine three probabilistic formulations of the sentence a and b are totally unrelated with respect to a given set of variables U. First, two variables a and b are totally independent if they are independent given any value of any subset…

人工智能 · 计算机科学 2015-05-19 Dan Geiger , David Heckerman

Despite major methodological developments, Bayesian inference for Gaussian graphical models remains challenging in high dimension due to the tremendous size of the model space. This article proposes a method to infer the marginal and…

统计方法学 · 统计学 2018-04-10 Gwenaël G. R. Leday , Sylvia Richardson

Conditioned limit laws constitute an important and well developed framework of extreme value theory that describe a broad range of extremal dependence forms including asymptotic independence. We explore the assumption of conditional…

概率论 · 数学 2015-12-31 Ioannis Papastathopoulos

Heckerman (1993) defined causal independence in terms of a set of temporal conditional independence statements. These statements formalized certain types of causal interaction where (1) the effect is independent of the order that causes are…

人工智能 · 计算机科学 2015-05-19 David Heckerman , John S. Breese

Bayesian networks provide a powerful tool for reasoning about probabilistic causation, used in many areas of science. They are, however, intrinsically classical. In particular, Bayesian networks naturally yield the Bell inequalities.…

量子物理 · 物理学 2014-12-03 Joe Henson , Raymond Lal , Matthew F. Pusey

Note: Accepted version, published in Statistical Papers, https://doi.org/10.1007/s00362-023-01414-3. It is shown that some theoretically identifiable parameters cannot be empirically identified, meaning that no consistent estimator of them…

统计理论 · 数学 2023-04-18 Christian Hennig
‹ 上一页 1 2 3 10 下一页 ›